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Received September 23, 2013
Accepted November 20, 2013
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The structure of organotin oxides playing a key role on the transesterification of dimethyl carbonate with hydrogenated bisphenol A
School of Materials Science and Engineering, The State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300160, China 1School of Environment Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
Korean Journal of Chemical Engineering, March 2014, 31(3), 427-430(4), 10.1007/s11814-013-0247-9
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Abstract
Transesterification of dimethyl carbonate (DMC) with hydrogenated bisphenol A (HBPA) was studied over various organotin oxides under pressured condition without removal of by-producing methanol. Bu2SnO displayed higher activities in HBPA conversion and bis-methylcarbonate of hydrogenated bisphenol-A (BMHBPA) synthesis, and HBPA conversion and BMHBPA selectivity reached 97.4% and 84.0%. However, when Ph2SnO was used as catalyst, HBPA conversion and BMHBPA selectivity decreased to 81.5 and 37.7%. Catalyst steric hindrance significantly influenced HBPA conversion and BMHBPA formation, and π-d interaction between phenyl ring and Sn was unfavorable for the transesterification of HBPA with DMC. Moreover, the catalytic system was further optimized.
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